In general it was an "below average" stay as we had 2 maintenance problems. On day 1 we reported the jacuzzi/bathtub was not working. They said they did not have anybody to fix at that moment but they would send someone the day after. They did not send anyone and we reported the problem again. Disappointingly, when we left the hotel on day 4 it was still not working. On day 1 we reported the air-condition was not working. There was almost no air whatsoever coming from the ventilation and it was 27C outside. They sent someone that just looked around the room to make sure the heaters were turned off but he did not fix anything. We had a very hot and sweaty first night. The following day I reported the problem again and a receptionist suggested us to sleep with the windows open (!), although it is a noisy street in the front. We waited, nothing was fixed, I called again and someone said this was an old building and they have restrictions in regards to their ventilation/air condition (!!). We had to sleep the following nights with a fan in the room. The lack of proper ventilation/air condition was our biggest disappointment in staying at the Opera Hotel and we would not stay there again, especially in spring/summer.